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公开(公告)号：US20170131142A1
公开(公告)日：2017-05-11
申请号：US14933692
申请日：2015-11-05
Applicant: Tom Luk , Christopher Falt , Sean Sebastian O'Keefe
Inventor： Tom Luk , Christopher Falt , Sean Sebastian O'Keefe
CPC classification number: G01J1/44 , G01J1/4228 , G01J2001/4406 , G01J2001/444 , H03F3/08 , H03F3/45076 , H03F2200/144 , H04B10/6931
Abstract: A method. The method may include transmitting an optical noise signal to a first photodetector and a second photodetector within an optical receiver circuit that includes a transimpedance amplifier circuit. The method may further include measuring, in response to transmitting the optical noise signal, a power output from the optical receiver circuit. The method may further include determining, using the power output, a difference in photodetector responsivity between the first photodetector and the second photodetector. The method may further include adjusting, using a transimpedance gain controller, an amplifier gain within the optical receiver circuit to decrease a difference in photodetector responsivity between the first photodetector and the second photodetector.
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公开(公告)号：US20160265880A1
公开(公告)日：2016-09-15
申请号：US15065701
申请日：2016-03-09
Applicant: Cubic Corporation
Inventor： Tony Maryfield , Mahyar Dadkhah , Christian Cugnetti
CPC classification number: G01J1/44 , F41G1/38 , F41G3/06 , F41G3/08 , F41G3/145 , G01J2001/4406 , G01J2001/446 , G01S7/486 , G01S17/023 , G01S17/88 , G02B23/105 , G02B23/18 , G02B27/20 , G06T5/003 , G06T5/20 , G06T5/50 , G06T7/20 , G06T7/33 , G06T7/73 , G06T11/60 , G06T2207/10012 , G06T2207/10016 , G06T2207/10048 , G06T2207/20224 , G06T2207/30212 , H01L31/02005 , H01L31/02019 , H01L31/0203 , H01L31/03046 , H01L31/105 , H04N5/23222 , H04N5/33 , H04N13/204
Abstract: Techniques are disclosed for providing the weapon-mounted optical scope that provides for wind sensing and the display a ballistic solution without the need for a separate device. Embodiments may include various additional sensors housed within the weapon-mounted optical scope to provide data for the ballistic solution calculation. Embodiments may further include a display at the input aperture rather than internally at the first-focal-plane, enabling for simpler, more cost effective embodiments. Additionally or alternatively, embodiments may include a laser, separate from the wind sensing laser, to perform range-finding functions, and/or an enhanced-image assembly.
Abstract translation: 公开了用于提供武器安装的光学镜架的技术，其提供风力感测和显示弹道解决方案，而不需要单独的装置。 实施例可以包括容纳在武器安装的光学镜架内的各种附加传感器，以提供用于弹道解决方案计算的数据。 实施例还可以包括在输入孔径而不是在第一焦平面内部的显示器，使得能够实现更简单，更具成本效益的实施例。 附加地或替代地，实施例可以包括与风感测激光器分离的激光器，以执行测距功能和/或增强图像组件。
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公开(公告)号：US20160056785A1
公开(公告)日：2016-02-25
申请号：US14829490
申请日：2015-08-18
Applicant: Seek Thermal, Inc.
Inventor： Jason Wolfe , Willliam J. Parrish , Ross Williams
CPC classification number: H03G3/3084 , G01J1/18 , G01J1/44 , G01J5/22 , G01J5/34 , G01J2001/4406 , G01J2001/444 , G01J2005/0048 , G01J2005/0077 , G01R27/2605 , H01G7/00 , H04N5/33 , H04N5/3651 , H04N5/3655
Abstract: An imaging system includes an array of photodetectors and electronic circuitry associated with the photodetectors to read intensity values from the photodetectors. The electronic circuitry can include an integrator with an integrator capacitor having a nominal capacitance, wherein a gain of the electronic circuitry associated with a photodetector can depend at least in part on the actual capacitance of the integrator capacitor, the actual capacitance differing from the nominal capacitance. The imaging system can be configured to determine a gain factor that depends at least in part on the actual capacitance and/or a signal voltage input to the integrator. The imaging system can be configured to apply the gain factor based at least in part on the actual capacitance of the integrator capacitor calculated. The imaging system can be a thermal imaging system and may include an infrared camera core.
Abstract translation: 成像系统包括与光电检测器相关联的光电检测器和电子电路的阵列，以从光电检测器读取强度值。 电子电路可以包括具有标称电容的积分器电容器的积分器，其中与光电检测器相关联的电子电路的增益至少部分取决于积分电容器的实际电容，实际电容不同于标称电容 。 成像系统可以被配置为确定至少部分地取决于输入到积分器的实际电容和/或信号电压的增益因子。 成像系统可以被配置为至少部分地基于所计算的积分电容器的实际电容来施加增益因子。 成像系统可以是热成像系统，并且可以包括红外相机芯。
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公开(公告)号：US20140374570A1
公开(公告)日：2014-12-25
申请号：US14012154
申请日：2013-08-28
Applicant: Camille L. HUIN , Gary R. CARREAU
Inventor： Camille L. HUIN , Gary R. CARREAU
IPC: H04N5/378
CPC classification number: H04N5/378 , G01J1/44 , G01J2001/4406
Abstract: The system may include a pixel array, a selector, a sampler, and a converter. The pixel array may generate output signals that representing radiation incident upon the pixel array. The selector may select one of the output signals. The sampler may sample the selected output signal. The converter may generate a digital signal based upon the selected output signal. The sampler may include a charge integrator that compensates for parasitic capacitance of the selector by selecting a first feedback capacitance to obtain a first sample, and after obtaining the first sample, selecting a second feedback capacitance to obtain a second sample. The first feedback capacitance may be greater than the second feedback capacitance.
Abstract translation: 该系统可以包括像素阵列，选择器，采样器和转换器。 像素阵列可以生成表示入射在像素阵列上的辐射的输出信号。 选择器可以选择输出信号之一。 采样器可以对选定的输出信号进行采样。 转换器可以基于所选择的输出信号产生数字信号。 采样器可以包括电荷积分器，其通过选择第一反馈电容来获得第一采样来补偿选择器的寄生电容，并且在获得第一采样之后，选择第二反馈电容以获得第二采样。 第一反馈电容可以大于第二反馈电容。
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公开(公告)号：US20040036012A1
公开(公告)日：2004-02-26
申请号：US10648110
申请日：2003-08-26
Inventor： Atsushi Horiguchi , Tohru Mori
IPC: H01J040/14
CPC classification number: G01J1/44 , G01J2001/4406
Abstract: A photodetector continuously measure quantity of light ranging from high intensity to low intensity at high speed. The photodetector comprises an operational amplifier, a photodiode connected to an inverting terminal of the operational amplifier for outputting a signal corresponding to quantity of light to be detected, a plurality of feedback resistors differentiated in each resistance value, an analog switch for selectively connecting input terminals thereof to which one ends of the feedback resistors are connected to an output terminal of the operational amplifier except the feedback resistor having the maximum resistance value, or connecting the input terminal thereof which is rendered in a non-connection state to the output terminal of the operational amplifier instead of the feedback resistor having the maximum resistance value, wherein the feedback resistor having the maximum resistance value is connected to the output terminal of the operational amplifier at its one end and to the inverting input terminal of the operational amplifier at its other end, and wherein the other ends of the other feedback resistors are connected to the inverting input terminal of the operational amplifier.
Abstract translation: 光电探测器连续地测量从高强度到低强度的高光量。 光检测器包括运算放大器，连接到运算放大器的反相端的光电二极管，用于输出对应于待检测光量的信号，在每个电阻值中区分的多个反馈电阻;模拟开关，用于选择性地连接输入端 其中反馈电阻器的一端连接到除了具有最大电阻值的反馈电阻器之外的运算放大器的输出端子，或者将其处于非连接状态的输入端子连接到非连接状态的输出端子 运算放大器代替具有最大电阻值的反馈电阻器，其中具有最大电阻值的反馈电阻器在其一端连接到运算放大器的输出端，并在其另一端连接到运算放大器的反相输入端 ，并且其中另一端的另一端 反馈电阻连接到运算放大器的反相输入端。
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Patent Agency Ranking
公开(公告)号：US5106190A
公开(公告)日：1992-04-21
申请号：US405248
申请日：1989-09-11
Applicant: Toshiaki Fukuma
Inventor： Toshiaki Fukuma
CPC classification number: G01J1/16 , G01J3/42 , G01J2001/4242 , G01J2001/4406 , G01J2001/446
Abstract: A spectrophotometer comprising a light source, a spectroscope which separates the light of light source depending on the wavelengths, chops the light into the first and second light beams and allows the light beams to pass through the reference cell and sample cell, a photodiode which alternately receives the light beams from the reference cell and sample cell, a variable gain amplifier which amplifies a light current of photodiode, an A/D converter which converts and guides the reference output and sample output as the digital values synchronously with the chopping period, and a again setter which sets the gain of the variable gain amplifier depending on the reference output value from the A/D converter.
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公开(公告)号：US4847483A
公开(公告)日：1989-07-11
申请号：US137616
申请日：1987-12-24
Applicant: Takashi Nishibe , Shotaro Yokoyama
Inventor： Takashi Nishibe , Shotaro Yokoyama
CPC classification number: G01J1/44 , G01J2001/4406 , G01J2001/446
Abstract: A device for measuring the intensity of light received by a photosensor comprises a photosensor for receiving light and producing a corresponding current and a circuit for integrating the current so that the intensity of the received light is indicated as the time required for the integration value of the integrating circuit to reach a predetermined value. If the intensity of the light is determined to be high at the start of the integration operation the integration value is set to the smaller of two predetermined values. If the intensity of the light is low, the integration value is set to a larger value.
Abstract translation: 用于测量由光电传感器接收的光的强度的装置包括用于接收光并产生相应电流的光电传感器和用于积分电流的电路，使得接收的光的强度被指示为所述接收光的积分值所需的时间 积分电路达到预定值。 如果在积分操作开始时将光的强度确定为高，则将积分值设置为两个预定值中的较小值。 如果光的强度低，则积分值被设定为较大的值。
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公开(公告)号：US4669877A
公开(公告)日：1987-06-02
申请号：US704368
申请日：1985-02-22
Applicant: Charles M. Wittmer
Inventor： Charles M. Wittmer
CPC classification number: H03G3/3026 , G01J3/42 , G01J2001/4406 , G01J2001/4453
Abstract: A digital gain controlled current to voltage amplifier having particular utility for interfacing with and forming part of a spectrophotometer system with a photomultiplier tube being responsive to light for producing an analog current proportional to the intensity thereof. The digital gain controlled current to voltage amplifier incorporates a current switched multiplying digital-to-analog converter inside its feedback loop. In this manner, the feedback loop impedance may be maintained constant as its gain is varied under control of a software programmed microcomputer.
Abstract translation: 数字增益控制电流到电压放大器具有用于与分光光度计系统连接并形成分光光度计系统的一部分的特别实用性，其中光电倍增管响应于光以产生与其强度成比例的模拟电流。 数字增益控制电流到电压放大器在其反馈环路内部包含电流开关倍增数模转换器。 以这种方式，当软件编程的微型计算机的控制下，其增益变化时，反馈回路阻抗可以保持恒定。
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公开(公告)号：US20240361182A1
公开(公告)日：2024-10-31
申请号：US18139232
申请日：2023-04-25
Inventor： Junjie LU , Jing GUO , Leon Samuel WANG , Xiaofeng LIN , Xicheng Jiang
IPC: G01J1/46
CPC classification number: G01J1/46 , G01J2001/4406 , G01J2001/446
Abstract: An apparatus for detecting optical signals includes a photodetector. The photodetector is reverse-biased by a first voltage and a second voltage is added to the first voltage to provide an offset equal to the second voltage for the photodetector. A first circuit is coupled to the first circuit to provide the second voltage for the photodetector and a second circuit is coupled to the first circuit to provide the first voltage to the photodetector to reverse-bias the photodetector. The second circuit provides an output voltage proportional to a current of the photodetector at an output of the second circuit.
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公开(公告)号：US20230343879A1
公开(公告)日：2023-10-26
申请号：US18347450
申请日：2023-07-05
Applicant: CANON KABUSHIKI KAISHA
Inventor： YASUHARU OTA , KAZUHIRO MORIMOTO
IPC: H01L31/02 , H01L31/107 , G01J1/44
CPC classification number: H01L31/02027 , H01L31/107 , G01J1/44 , G01J2001/4466 , G01J2001/4406 , G01J2001/444 , G01J2001/442 , G01J2001/448
Abstract: A photoelectric conversion apparatus includes an avalanche photodiode including an anode and a cathode, a switch that is connected to one node of the anode and the cathode, and a power line to which a drive voltage is to be applied, and configured to switch a resistance value between the one node and the power line, and a signal generation unit configured to generate a pulse signal for controlling switching of the switch, wherein a value obtained by dividing the number of the pulse signals in a first exposure period by the first exposure period, and a value obtained by dividing the number of the pulse signals in a second exposure period having a length different from a length of the first exposure period, by the second exposure period are different.
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